Scale for weighing grain



(No Model.) 2 Sheets-Sheet 1. J. DABLE.

SCALE FOR WEIGHING GRAIN. No. 377,292. Patented Jan. 31, 1888.

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(N0 Modei.) 2 SheetsSheet 2. J. DABLE.

SCALE FOR WBIGHING GRAIN.

No. 377,292. Patented Jan. 31, 1888.

U TTnn STATES PATENT Carton.

JOHN DABLE, OF CHICAGO, ILLINOIS.

SCALE FOR \NEIGHING GRAIN.

SPECIFICATION forming part of Letters Patent No. 377,292, dated January31, 1888.

Application filed Xovcmber 3, 1857.

To aZZ whom it may concern:

Be it known that I, JOHN DABLE, of Chicago, county of Cook, and State ofIllinois, have invented certain Improven'ients in Scales for \VeighingGrain, of which the following is a specification.

My said invention will be more fully described hereinafter withreference to the acco n1- panying drawings, in which-- Figure 1represents a vertical longitudinal section of a receivinghopper and asquare frame extending around the lower portion of said hopper andattached to the same and a foundation-frame for the same s anding uponsupports with niyimprovement attached; Fig. 2, a detail view, it being aplan of the slide 0, rack J, and rod j, connecting these two parts and apart of the support I for the rack-andpinion shaft; Fig. 3, a frontelevation of the vertical shaft E in sleeve F, pinion e, and otherparts; and Fig. 4, a vertical longitudinal sec tion of the frame A andhopper C, with a lever, M, substituted for the vertical shaftand pinionshown in the other figures.

A indicates the main frame, which sustains all the other parts.

B is a square frame, whichis attached tothe receiving-hopper C, whichextends down through that frame and is provided with an opening for thegrain to pass down through, said opening being opened and closed by thereciprocating slide 0.

The receiving-hopper C and the square frame B are sustained from belowby the four scale'beams D, which are braced by the iron rods (2. Thelong scale-beams D are pivoted together at their forward ends, where arod or chain connects them with the weight-beam WV, as shown, or in anyother suitable manner; but for these devices I make no claim herein. Theouter lower end of the hopper is provided with a metal covering, f,which extends down and terminates in aspout, C, for the discharge of thegrain into any suitable receptacle after it shall have been weighed inthe hopper C. The spout on its front and rear sides is provided withsuitable apertures, through which back and forth the closing slide 0 isforced, as may be required to open and close the bottom of the grain-hopper.

The object of my said invention is to fur- Serial No. 154,227. (Nomodel.)

nish devices for the more efficient and certain operation of the saidslide 0. Heretofore a similar slide has been operated by means of a rod,the back of which was connected with a L vertical lever which wasfulcrumed upon some suitable support and used to operate the slide. Thatdevice was seriously objectionable, because by it the slide was not heldand confined to true action in the operation of opening and closing thelowerend of the hopper C, the slide being liable to be jammed with grainin the apertures, which would destroyaccuracy in the operation ofweighing, which defective ac tion will be prevented by the use of mydevices, which will secure correct action under all circumstances. Thelever would be liable to be impeded by the friction of the parts invarious ways. Besides this consideration, the operation of such leverwould require space that could be better occupied.

Fig. 4 of the drawings is introduced for the mere purpose ofillustrating that defective de vice for opening and closing thegrain-hopper C. My said device claimed herein consists of the verticalshaft E, inclosed for protection merely in the sleeve F, is furnished atthe upper end with hand-wheel G and a support, H, attached to thehopper, to hold it against both vertical and lateral motion, and at thelower end with a pinion, e, and a rack, J, which is itself connected tothe slide a by means of the rod j. pinion are sustained by the supportI, which may be a flat bar of iron, and has the form shown in Fig. 1,and is provided with a slot, 13, through which the rod j works freelyback and forth. It is sufficiently stiff and strong to hold the rack andpinion steadily upon its outer end, and its inner end is fastened to thesquare frame B, which contains the lower part of the hopper. The outerend is provided with a box for the rack and pinion by means of the metalplate t", which is held parallel to the support and up from it by headedbolts and nuts, as shown in Fig. 1.

It is manifest that as both supports for the vertical shaft-namely, thatfrom the hopper O and that from the frame B, respectivelyare securelyfastened together, any motion of one of them will be imparted to theother, and thus any action either irregular or injurious is not Thelower end of the shaft E and the likely to take placein the operation ofthe slide 0. The turning of the vertical shaft to the right or left willresult in the operation of the slide 7 through the pinion rack and rodin an even 5 and regular manner for the opening and closing of thelowerend of the hopper without impairing the aceuracy of the weighing.

What I claim as my invention, and desire to secure by Letters Patent,is-- 1. The combination of the vertical shaft E, provided on its lowerend with pinion Q, with the support I, rigidly attached to the squareframe B bel ow,and the support H, in like manner attached to the hopper0 above, and with 15 the rack J, gearing with said pinion and with theslide 0, the said slide and rack being rigidly connected together, thewhole adapted to operate the slide, substantially as described;

2. In combination with the square frame B and rigidly attachedthereto,the support I, pro- 20 vided with the longitudinal slot 1', toserve as a guide for the rack j, and at its outer end with the describedbox adapted to sustain the lower end of the vertical rod E, the pinione, and rack J, and guide the motion of the rack, sub- 25 stantiallyas-deseribed.

JOHN DABLE.

Witnesses:

ROBERT B. IIITOHELL, ALBERT J ELWIG.

